Breakdown: Costa Mesa senior star Oronde Crenshaw said he's out with a right high ankle sprain, a bone bruise on top of his right foot and a nagging right Achilles' heel … With Crenshaw out at tailback, the Mustang turn to senior Jason Garcia and sophomore Mason Mataafu … Katella, ranked No. 5 in the CIF Southern Section Southern Division poll, opened the season last week with a 28-20 win against Western … Costa Mesa might get Quinton Bell, a senior linebacker and wide receiver, back after he missed the first two games with a hip-flexor injury … Knights are coming off their first nine-win season in the program's history and first postseason win since 1998 … Mustangs have only beaten Katella once in 10 games and the victory came in 2011, Wally Grant's first as Costa Mesa's head coach.